Ganbare! Nippon! Olympic 2000 is a sports game themed around the 2000 Summer Olympics. Released for the Game Boy Color in Japan, it likely features a variety of Olympic sports, allowing players to compete in different events. Gameplay likely focuses on simplified controls and arcade-style competition.  The game may have included various national teams for players to choose from.  While the exact developer isn't always explicitly stated in readily available sources, Konami is a strong candidate for a publisher of Olympic-themed games on Nintendo platforms.

Ganbare! Nippon! Olympic 2000 (Japan)

Ganbare Goemon - Hoshizorashi Dynamites Arawaru!! (Japan)